مشخصات پژوهش

عنوان	Partitioning of L-methionine in aqueous two-phase systems containing poly(propylene glycol) and sodium phosphate salts
نوع پژوهش	مقاله چاپ‌شده در مجلات علمی
کلیدواژه‌ها	ATPS, Poly (propylene glycol), Sodium phosphate salts, Partition coefficient, Methionine
چکیده	The partitioning behavior of L-methionine has been studied in aqueous two-phase systems of (poly(propylene glycol) + sodium phosphate salts + H2O) at different temperatures. The salts used were sodium di-hydrogen phosphate (NaH2PO4), di-sodium hydrogen phosphate (Na2HPO4) and tri-sodium phosphate (Na3PO4). The effects of tie line length, salt type, and temperature on the partition coefficient of this amino acid have been studied. In addition, thermodynamic parameters (DH_, DS_ and DG_) as a function of temperature were calculated. The results showed that increasing tie line length led to decreasing of the partition coefficient.We also showed that the partition coefficients of the amino acid in the systems containing Na3PO4 are greater than the other two salts. Moreover, it is verified that increasing temperature led to decreasing the partition coefficient. The experimental partition coefficient data are correlated using a modified virial-type model.
پژوهشگران	بهمن جامه بزرگ (نفر چهارم)، سمیه تیانی مقدم (نفر سوم)، رحمت صادقی (نفر دوم)، علیرضا صلابت (نفر اول)